The basic principle of fluid control is based on the dynamic characteristics of the fluid. Through design and control, the fluid moves along a predetermined path and speed.

Definition: Fluid dynamics is the science that studies the mechanical behavior of fluids (including liquids and gases) in motion. It focuses on the change of parameters such as velocity, pressure, density, etc. of fluids when subjected to external forces, as well as the interaction between fluids and solid boundaries.

Research objects: Fluid dynamics has a wide range of research objects, including water, air, oil, etc. These fluids are widely present in nature and engineering applications.

Basic principles: Fluid dynamics is based on the basic physical properties of fluids such as continuity, viscosity, and compressibility, and studies the movement of fluids under external forces.

Research method: The research methods of fluid dynamics include theory, calculation and experiment. These three methods complement each other and jointly promote the development of fluid dynamics.